TDA7703R datasheet(18/32 Pages) STMICROELECTRONICS

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Electrical specifications

TDA7703R

18/32

Rev 1.2

3.5

Overall system performance

All measurements obtained with application of Figure 9 unless otherwise specified.

3.5.1

FM overall system performance

Antenna level equivalence: 0 dBµV = 1 µVrms (Antenna terminal voltage with 50 Ω source).

Figure 6.

FM input set-up

Input level referred to signal generator loaded with 50

Ω (V

rf, node 'A'); no antenna dummy;

AM input not connected. Frf = 98.1 MHz, Vrf = 60 dBµV, mono modulation, fdev = 40 kHz,

faudio = 1 kHz. De-emphasis = 50 µs. Unless otherwise specified

Table 13.

FM overall system performance

Parameter

Test condition

Min

Typ

Max

Units

Tuning range FM Eu

(can be modified by the user)

87.5

108

MHz

Tuning step FM Eu

100

kHz

Tuning range FM US

87.5

107.9

MHz

Tuning step FM US

200

kHz

Tuning range FM Jp

MHz

Tuning step FM Jp

100

kHz

Tuning range FM EEu

MHz

Tuning step FM EEu

100

kHz

Sensitivity

S/N =26dB

-3

dBµV

Ultimate S/N

@ 60 dBµV, mono

@ 60 dBµV,

Deviation = 75 kHz, mono

@ 60 dBµV, stereo

Distortion

Deviation= 75 kHz

0.15

Max deviation

THD=3%

120

kHz

Adjacent channel selectivity

(Vu/Vd)

ΔF=100 kHz, SINAD=30 dB

desired 40 dBµV, dev=40kHz,

400Hz

undesired. dev=40kHz, 1KHz

Alternate channel selectivity

(Vu/Vd)

ΔF=200 kHz, SINAD=30 dB

desired 40 dBµV,

dev=40 kHz, 400 Hz

undesired. dev=40kHz, 1kHz

Vrf + 6dB

PCB

UNDER

TEST

Vrf + 6dB

Vrf

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